Forced-feed crosser



Aug. 10 1926.

E. WEINHEIM FORCED FEED cnossnn Original Filed Sept. 23. 1921 INVENTOREmzl Wez'z zfi a m,

Patented Aug. 10, 1926.

UNITED STATES QFFJICE.

EMIL WEINHEIM, on NEW YORK, N. Y.

FORCED-FEED CROSSER.

Original application filed S epte mber as, 1921, serial No. 502,593.Divided and. this. application filed March 26, 1 924, $eria1 N10.707L948.

This invention relates to the manufacture.

vide controllable means forthe production of a sheet of such dope to belald QO11131I1H- ously upon a relatively moving body fabric. A stillfurther object of the invention is to provide for the movement andmanipulation of such a sheet of dope at its source in such a way thatthe relative motion or a part of the relative motionbetween the sourceof this dope and the body fabric upon which it is to be laid is in wholeor in part. in the source of the dope itself.

' The above and further objects of the invention will better beunderstood by refer ence to the illustrative .en'ibodimcnt of myinvention described in the following specification in connect-ion withthe accompanying drawings which form a part hereof. The claimsareqdirected to this illustrative embodiment solely for purpose ofillustration and not limitation. This application is a division of myCQ-pendin application, days docket .1060, substitute tooled leather andprocess for making same, Ser. No. 502,593, filed Sept. 23, 1921. p

In the, drawings, Fig. 1 is a diagrammatic representation of apreferredtype'of apparatus for practicing my invention, the samebeingshown for the most part in elevat-ion;

Fig. 2 is a plan view of the apparatus shown in Fig. 1; and V n Fig. 8is an enlarged crosssection through the plane of section line IIIIII ofFig. 1. In practicing my invention, I employ a body fabric A of anysuitable character, p eferably one having a firm, smooth top surfaceanda lower surface of considerable pile. The top surface 1 of this bodyfabric is preferably colored to embody the color of the background forthe finished product. A roll 2 of this fabric is indicated. in thediagram of Fig. 1 and should ;be threaded through any usual type ofdo peapplying apparatus, such as that diagrammatically indicated and be woundup as a finished product on the reel 3, it being understood this exactlength is not essential.

ranged sothat its orifice is lengthwiseof the that any and all usualtreatments immediately before reeling may be employed; The roll 4 ,oflace curtain material B or any .other material to be incorporated uponthe body fabric A and itself too fragile to withstand the abrasionaction of a doctor blade is threaded throughthe apparatus to overly thebody fabric B being supported from underneath by A and the one lying onthe other. Rolls land 7 for drying purposes are power driven. as is allthe rest of the apparatus to cause uniform longitudinal movement ofthefabric in the direction of the arrows.

A suitable fluid dope c is employed to' combine the two fabrics A andB.This dopemay be a composition of oxidized oils thinned with avolatilesolventof the general character used in the oil-clth industry,but for some purposes I prefer a dope consisting of a pyroxalin compoundsuch as that described in any of my priorapplications in this art. Thepyroxalin compound is pre- ;ferred on account of its greater tendenc toshrink upon setting. In fact, any ope usual to the art may be employedin this apparatus even to the very viscous dopes usually employed inconjunction with a cloctor blade forforcing them into the fabric.

In the preferred practice ofmy invention, however, I employfno doctorblade but apparatus such as that illustrated diagranr inatically' inthefigures. Inthis apparatus, the dope, which may be any of the dopespreviously mentioned, is :aused to flow downwardly upon the movingfabrics A and Bfrom a hollow do ezbar or closed trough C. This dope barhas an adjustable orifice 10, delivering the dope in a sheet directedsubstantially verticallydownwardly and means is provided for regt latingthe width. of .this orifice such as the closure bar adjustable by means,of the adjustable bolts 31. By this means, the thickness of the sheetof Idope, being extruded from the hollow bar C, may be regulated. Thehollow ,dope bar C is of ,a length approximatingthe width of the fabricto be coated, although fabric to be coated and lengthwise of the travelof the fabric. It is guided and supported for transverse movement uponparallel ways 11 and 12 overlying the fabric. These ways are parallel tothe plane of the It is arfabric. A dope reservoir D contains a maximumcharge of dope and is connected with the movable trough C by a flexiblemetal conduit 13. Pressure is applied to the interior of the container Dthrough pressure pipe 14. Air pressure is satisfactory and this pressureis imparted through the duct 13 to the interior of the dope bar C. illof this hollow apparatus is designed to withstand internal pressure.

The entire dope bar C is preferably reciprocated baclr and forth alongthe ways 11 and 12 at each variable rate of speed that the lay or lapapplied transversely to the body fabric shall be of uniform thickness.

in the embodiment illustrated, cylinder 16, supplied with steam from theconduit 11 is controlled by an automatic valve 18 of usual constructionin reciprocating steam engines and operates the piston 'rod 19 through apiston of usual construction. The reciprocation of piston rod 19, whichis connected to the hollow dope bar C imparts to it the desiredmovement. With the body fabric travelling in the direction of the arrowand the relative speeds adjusted properly, two lain'inations of dopesheet are progressively laid upon the moving body fabric. ihis dope thenpasses through the interstices of the fabric B and incorporates itselfwith the body fabric A, binding the two together.

The body fabric A with its applique B may be carried along through theapparatus in any suitable manner over guide rollers 20, 21 and 22, butit should be understood that, although both top and bottom rollers maybe employel, the pressure between such rollers should be insun icient toimbed the applique B in the body fabric A, as it is desired that thefinished product have a decided raised effect when the lace curtainmaterial is employed. This is not true, however, for all app'liqus B,nor is it limitation for the broad use of this forced feed applicationof a sheet of dope.

In the operation of this movable dope bar, the first stroke of thepiston rod 19 causes the application of a dope layer 32 in the form of arhombus. The reverse stroke causes the application of anotherrhombusshaped layer 33, a triangular half of which second rhombus coversa similar triangular half of the first rhombus, and so on. It is in thisway that the two layers or laminations of dope sheet are appliedcontinuously upon. the travelling strip beneath. It is thus thatsomething like a grain of relatively crosswise diagonal directionbetween the different layers is accomplished for the incorporated dope.One traverse through apparatus of this type is sufficient to fill inplied.

all the interstices and form a complete bridge for the applique so thatuponmerging from the machine the product is complete and finished. 7

Another special advantage of the presentprocess and apparatus is thatthe actual application of the sheet of dope is free from anything eacepta sheet of dope contacting with the fabric to which the dope is ap itshould be understood that the usual drying apparatus for the fabric maybe employed, the same to be located at any convenient stage in theprocess and after the application of the dope sheet.

The inventive thought may havea variety of expressions as iscontemplated in what I claim and desire to secure by United Statesletters Patent as follows: 7

1. in the manufacture of substitute leather, themethod of aaplying dopecomprising drawing along in a substantially horizontal plane a strip offabric at a predetermined rate of speed; discharging surface treatingdope above said moving fabric in substantially vertical sheet, the planeof which is lengthwise of the direction of movement of said body fabric;and causing said discharging sheet of dope to be moved baclt and forthtransversely of said moving strip of fabric at a predetermined rate toform diagonal overlapping lays upon said strip of fabric.

2.1 m apparatus for applying dope to body fabric; a hollow dope'bar; aflexible connection for supplying dope to said dope bar; means forcausing a fabric to be coated to travel under said dope barsubstantially in the direction of its length; and means forreciprocating said dope bar transversely of said fabric.

3. In the manufacture of substitute leather, the process of applyingdope to a body fabric comprising imparting continuous motion to the bodyfabric in a horizontal plane; extruding dope directly upon the movingbody fabric and simultaneously imparting to the source of. saidextruding a movement having a component transverse to the direction oftravel of said body fabric.

in apparatus for applying dope to a body fabric, a hollow dope bar; apressure reservoir containing a maximum charge of dope; a duct betweensaid dope bar and said reservoir and means for applying fluid pressureto said reservoir; means for drawing a fabric to be coated lengthwise ofsaid dope bar; and means for reciprocating said dope bar transversely ofthe travel of said fabric.

in witness whereof, I have signed my name to this specification, this10th day of November, 1928.

EMIL WEINHEIM.

